Door bolt



P. H. FERRIER, IR.'

DOOR BOLT.

APPLICATION FILED ri. 23; |921.

Patented May30,192`2.

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Wil/1514 SW1/woz FEET H. Ferrerln @MTO ST'S orties PETER H. FERR/IER, JR., OF CHICAGO, ILLINOIS.

DOOR BOLT.

Application 'filed February 23, 1921.

Vthe following is a specification.

This invention relates toimprovements in bolts for double swinging or sliding doors.

The primary object of the invention is the provision of a bolt for securely locking doors, and the details of which bolt have been so designedk as to cooperate in requiring a minimum of space.

A further objectof the invention is the provision of a door bolt of the above described character, which is specifically adapted for use upon double folding or sliding doors; said bolt extending longitudinally of one of said doors, and of such design as to be of minimum thickness, thus requiring no cutting or mutilation of any of said doors, in order to receive said bolt. 4

A furtherobject of the invention is the provision of a device 0f the above described character, the details of which can be cut orstamped from stock parts, to provide a durable, economic, and eiiicient door bolt.

Otherobjects and advantages will be apparent during the course of the following detailed description.

In the 'accompanying drawings ,forminof a part of this specification, and in whic similar reference characters designate corresponding parts throughout the several views,

Figure 1 is a perspective View ofl a pair of folding doors having the improved bolt construction mounted thereon.

Figure 2 is an enlarged fragmentary elevation, partly. in section, showing details of construction of said bolt.

Figure 3 is a 'fragmentary front elevation, showing parts'in section, of details of said bolt.

Figure 4f is a plan view partly in cross y section showing a guiding member associated with said bolt construction.

Figure 5 isl a perspectivel view showing a detail of construction.

ln the drawing, wherein for the purpose of illustration, is shown the preferred embodiment of my invention, the letter A designates a door casing, or similar structure, defining a door open-ing, and having the door structure B foldably or slidabl'y disposed Specification of Letters Patent.

Patented May 30, 1922.

Serial No. 447,05*?.

therein, A bolt structure C is operably disposed upon said door structure B and which includes the crank disc member D pivotally mounted upon the door structure B; a bolt member E pivotally connected to said disc member D; and a guide member Fy mounted .upon said door B, and adapted to guide movement ofthe bolt C.

. The door structure B may be of any approved construetion, and in the present instance comprises a pair of doors 10 and 11 hingedly connected together at 12, the door 11 being hingedly. connected at 13 t0 one side of the door casing fr. ture specifically embodies swinging doors, it is to be vunderstood that the bolt C' may be used in conjunction with any door construction. However, the bolt C has been provided primarily for use in connection with the folding doors 10 and 11, such as are in general use at the present time,fin garages and the like, where a relatively wide door opening is desirable, and whereity would be impractical to use a single door for closing said door opening.

Since in most instances, it will ,be desirable to have a bolt upon the inside of the door structure B, and in'view of the fact that the doors 1() and 11 fold outwardly, it can be readily seen that the bolt structure must be disposed intermediate the doors 10 and 11 when the same are in folded position.

This of course necessitates a bolt structure dated intermediate the doors 10 and 11.

The bolt C is preferably mounted upon the outer free door 10, preferably adjacent the hinged connection with the door 11, in order to provide the most effective locking condition.

The disc D is pivotally mounted upon the bolt 15,'and spaced from the inside 16 of the door 10, by a wear plate 17. Said bolt 15 is preferably inserted transversely through the door 10 with the head 18 overlying the outside of the door, whereby the disc D may be pivotally mounted upon the shank 19 of the bolt 15, and a nut QO/may be adjustably mounted upon the screw threaded end! of the shank 19 and be adjustably spaced While this structo permit oscillation of said disc or member D. rThe member D is substantially circular in formation, stamped from a flat piece of metal, and includes the disc proper 21, and a handle 22. The disc 21 and handle 22 are uniform in thickness throughout the member D. An aperture 23 is provided centrally' of the disc 21, and which aperture receives the shank 19 and the bolt 15. Suitable apertures 24 are provided upon opposite sides of the aperture 23, the same, of course, being eccentric with respect to pivotal mounting of the disc 21 upon the bolt 15. The `apertures 24 and aperture 23 are .in alignment.

The bolts E are of special construction, and it is preferred that a pair of the bolts be used in each bolt construction C. Since the bolt construction-C is adapted for use longitudinally of a door, each of the members E are consequently substantially equal to one-half the length of said door. The members E are tubular in formation, being preferably cut from standard lengths of tubing or pipe; each of said members E beA ing slotted upon the longitudinal center, and inwardly from one endthereof to provide a recess 25 extending inwardly from an end 26, upon each side of which recess the remaining portion of tubing provides arms 27.

In assembling the bolt members E to the disc 21 of the member D, the recesses 25 of said members E receive the disc portion 21, the members E being disposed upon opposite sides of the central aperture 23, in such manner that the apertures 28, Which are stamped in alignment in the arms 27, align With the apertures 24. A. pivoting member 30 is then inserted for pivotally connecting` the members' E to the disc 21 through apertures 24 therein, and said members 30 have their ends peened over, or countersunk into the apertures 28, in order v that there shall be no projection of the pivoting `rivet 30 from sides of the member E. Both of the members E are connected in the above described manner to the discs 21 and in the apertures 24 thereof. ln this manner the members E are eccentrically pi voted upon the disc 2l.. lt should be noted in this connection, that the Wear plate or disc 17 is of the same thickness as the legs or arms 27, and since the member D is operably disposed upon the longitudinal centers With respect to said member E, it can be seen from an observation of Figure 2 of the dravvings, that none of the combined details of construction of the member D and members E are of greater thickness upon the inside 16 of the door 10 than the thickness of the members E themselves.

The guide members F are of special construction, having been designed to accord With the general principles for Which the bolt structures C have been provided,

namely, conservation of space, and to this end, a 'base plate 35 is adapted for stationary disposal upon the inside 1G of a door 10, by means of screws 36 or the like inserted through suitable counter-sunk apertures 37 in said base member 35. A guide ring 38 is provided having an internal circumference 39 adapted to reciprocably receive the members E and Which is of just suilicient diameter that said members E can be reciprocated comfortably therein. Since during operation of the members E they oscillate as Well as reciprocate, it is desirable thatithe ring guide 38 be oscillatively disposed Within the base plate 35. A shank 40 is therefore provided, Which has a countersunk head thereon, whereby said shank 4() maybe rotated, or oscillatively disposed Within a suitable aperture 41, centrally of the "base plate 35.

1n operation, the disc D, the members E and the guides F having been properly assembled, substantially as illustrated in Figure 1, upon theV door structure B, upon oscillation of the disc 21 by the handle 22,

the membersl AWill be advanced or retracted .from the top and bottom of the door structure B. Suitable keepers Gr may be proing A adapted for receiving the eXtreme free ends of the bolt members E When the same are advanced for locking the door B in closed position, said keepers G are of course provided With apertures 45 therein for receiving said free ends of the bolt members E.

Thus a` bolt construction C has been provided, in Which the members E can be advanced or retracted by oscillation of the member D, and in this connection, it should be noted that the doWnmost or most inwardly retracted position of the bolts E are delinitely deiined by means of contact of the external circumference 46V of the disc 21,` with the inner or bottom surfaces/47 ofthe recesses 25, and Which position is best illus trated in Figure 3. In like manner, the open position of the bolts E is determined by the handle 22 abutting the upper bolt member E, when said bolts E are in advanced position in their keepers G., Thus no undue strain, or rupture of parts is likely to occur due to excessive operation or strain upon the, member D.

While sliding bolts operating and eccentrically disposed upon pivoted discs have been designed and used heretofore, it is to be understood that this invention has been designed and provided primarily to conserve space intermediate adjacent folding doors 10 and 11, and to this end cooperat ing parts of the bolt structure Chave been designed, and perfected, to occupy a minimum of space.`

yvided in the floor, or in the upper door cas- Various changes, in the4 shape, size and described, without departing from the spirit of the invention or the scope of the claims.

I claim:

1. In a door bolt, the combination with a door, of a bolt member provided with a slot extending inwardly upon the longitudinal center thereof, a crank disc centrally pivoted upon said door, said bolt eccentrically pivoted upon said disc in said slot, whereby vsaid bolt will be advanced or retracted upon oscillation of said disc, and a rocking guide member for said bolt.

2. In a door bolt, the combination of a bolt member, means for oscillatively advancing and retracting said bolt, and an oscillative guiding means for said bolt.

3. In a door bolt, the combination of a bolt member, means for oscillatively advancing and retracting said bolt, and means for guiding said bolt including a stationary base, and a guide member oscillatively mounted in said base.

4. In a door bolt, the combination with a door, of a disc member pivoted at its center upon said door, said disc having a handle integral therewith, a pair of bolts, each having a pair of arms upon an end thereof to provide a recess, means eccentrically pivoting said disc Within the'recesses of said bolt, and'upon opposite sides of said disc pivot, to oscillatively advance and retract said bolts upon oscillation ol said disc, and oscillative guiding means for each of said bolts.

5. In a door bolt, the combination with a pair or' folding doors provided for closing a4 passageway, of a crank member pivotally connected upon one of said doors, said crank member including a substantially cir cular diso, and a handle `integral therewith, means spacing said disc from said door, ka pair of bolts pivotally connected to said disc upon opposite sides of its door pivot, for reciprocation by oscillation of said disc, said bolts provided longitudinally upon an end thereof with a recess adapted to receive said disc for pivotal movement, guide menibers for the free ends of said bolts including a stationary ,basev plate detachably mounted upon said door, and a guide ring member oscillatively mounted in said base plate for reciprocably receiving said bolt members, said guide members delining the maximum thickness of any of the associated parts of said bolt structure upon said folding door.

PETER H. FERRIER, JR. 

